Diagnostic Uses

Search

User Menu

Fuel Saving

The SELECT-A-MAP diesel control unit will be of particular interest to fleet users as a simple way of reducing their ever increasing fuel costs. The unit is easily installed and all electronic fuel adjustments remain within the manufacturer’s original engine management system tolerances.The tachometer ‘Green Band’ represents the manufacturer’s optimum engine speed range for both economy and torque.

Operators encourage their drivers to stay within this speed range to save fuel. However, drivers often make excessive use of the ‘Red Zone’ and waste fuel.

Driver trainers are often used to promote sensible driving within the green band, but after a while, in most cases drivers tend to revert to their normal driving style.

The SELECT-A-MAP can be programmed to not only increase torque in the green band but also to limit fuelling in the red zone which encourages a change of driving habits, with earlier gear changes that keep the engine within the green band, resulting in significant fuel savings.

Units can also be individually mapped to suit the operator’s particular requirements.

Acceleration Control Feature

An additional, unique feature is Acceleration Control, that can be used on its own, with a standard map or in combination with a fuel modification map.

It provides a simple method of controlling performance based on engine acceleration rate, allowing acceleration to be limited without reducing torque at slowly increasing or constant engine speeds.

The SELECT-A-MAP positively encourages drivers not to accelerate rapidly and to ensure they stay within the green band, resulting in fuel savings and greater vehicle life.

The SELECT-A-MAP is a universal product that can also be used in many common rail diesel engine applications with custom mapping facility for agricultural, marine use etc.

Diesel-Blend – LPG/CNG

Click here to find out how Select-A-Map can reduce fuel costs and emissions even further when used as a dual-fuel diesel-blend ECU to inject a cheaper, greener fuel such as Liquid Propane Gas (LPG) or Compressed Natural Gas (CNG).

Diesel Particulate Filter (DPF) Friendly

Many modern cars are vulnerable to DPF blockage, especially when they are subjected to driving conditions that are incompatible with automatic DPF regeneration.

For example, if the car is mainly driven in slow moving traffic or used for short journey commuting, where the engine is rarely subjected to the driving conditions necessary for effective DPF regeneration, a build up of particulates in the filter can occur, ultimately leading to blockage.

The problem may be exasperated by overzealous engine remapping or crude ‘diesel tuning boxes’ which can increase the amount of unburned fuel entering the exhaust system in the form of particulates.

The result is the inconvenience of frequent trips to the dealer for ‘forced regeneration’, which may be a chargeable job.

The Select-A-Map ECU reduces the risk of DPF problems by allowing any increase in fuel to be governed by engine speed and load so that fuelling can be accurately controlled to reduce particulate emissions to a minimum. Uniquely, with 5 instantly switchable maps to choose from, it is also possible for the Select-A-Map ECU to be configured to automatically default to a standard or more DPF friendly map under normal driving conditions, allowing any of the enhanced performance maps to be selected only when needed.

DPF Removal

An additional plug-in emulation module is also available for use with the SELECT-A-MAP. This will appease the engine management system of most vehicles and prevent them from going into limp mode, if the DPF were to be removed.

Rolling Road plot showing diesel mapping capability

The SELECT-A-MAP ECU offers the driver a choice of maps that can be switched in an instant, allowing power to be increased only when needed, therefore reducing fuel consumption and further reducing any risk of DPF problems.

Diesel-Blend – LPG/CNG

Another cost saving option for fleet operators and high mileage diesel users is to run their vehicles on a cheaper fuel blend.

The Select-A-Map ECU was also developed to enable common rail diesel engines to run on a blend of at least 2 fuels, the most common being Liquid Propane Gas (LPG) or Compressed Natural Gas (CNG). It is compatible with most existing makes of LPG or CNG liquid and vapour systems that are designed to operate with multipoint petrol injection vehicles when used in diesel blend applications.

LPG substitution ratios of up to 40% are normal whilst using CNG ratios of above 50% can be substituted on much lower price fuel giving savings of typically between 10-25%.

The SELECT-A-MAP Diesel Blend ECU has many features and benefits not previously available including a choice of maps to suit the type of secondary fuel being used (LPG or CNG) and different operator requirements. Precise control of each fuel via two separate maps allows ethe perfect mixture to be achieved without any increase or decrease in overall engine power.

The Select-A-Map system acts as a universal interface when used with an LPG or CNG gas system, providing the gas system with simulated conventional petrol fuel injection signals that enable any standard gas system to be used in a dual-fuel / diesel-blend application. This unique approach means that the Select-A-Map can be used with virtually any gas system to create a diesel-blend system. Manufacturers of compatible gas systems include (but are not limited to) Prins, Vialle, BRC, OMVL, Zavoli, Eurogas, Bi-Gas, Romano, Tartarini, Landi Renzo, KME, Stefanelli, Necam, Koltech, LPG Tech, Altesa, Stag, E-Gas, Lima, Impco, Mercury, AG, GSPK, XL-R8, Star Gas, Leonardo, Emma-Gas, Bedini, Lovato, Calor, Calorgas, Autogas, Icom, Valtek, Majic, AEB, Stako, GWZM and Pharos.

A complete fuel remap with all the convenience of a tuning box

The Select-A-Map ECU is quite simply a revolution in vehicle remapping. It combines most of the benefits of a conventional diesel ECU remap with the ease of installation of a diesel tuning box. It is designed to be highly universal, making it compatible with most common rail diesel engines and it contains a host of other features not found in any other product.

The only non-intrusive remapping solution

Using patented technology, developed in the UK by the fuel injection experts at CRD Technology, the Select-A-Map ECU allows your vehicle to be remapped without cutting wires or making any modification to your vehicle's ECU. This not only makes for a quicker installation time, but also makes transferring to another vehicle possible and greatly reduces the risk of invalidating your vehicle's warranty.

Power, speed and accuracy

To maintain engine efficiency and reduce the risk of Diesel Particulate Filter blockage, it is imperative that any modifications to the quantity of fuel injected are precisely metered and timed. The Select-A-Map ECU achieves this by accurately monitoring fuel rail pressure as well as injector opening times, using a unique, non-intrusive injector sensing method. It performs many millions of calculations per second, enabling it to compute engine speed and load values instantly so that the exact quantity of fuel required is always injected at exactly the right moment.

Advanced Features

Using the same principle as a professional ECU re-map to create a mirror image of the vehicle's own ECU fuel map, the SELECT-A-MAP creates 5 different maps that are instantly switchable using the remote key fob with the ignition on or engine at idle.

1) Standard Map

2) Economy Map

3) Fast Road Map

Increased torque and increased BHP for everyday driving, while retaining good driveability and improved economy, with no adverse effect on DPF.

4) Very Fast Road Map

Tuned to give the highest Torque and highest Power for occasional fast road or track day use.
Note: Prolonged use of this map could result in more frequent DPF regeneration and, since it provides uncompromising levels of performance, fuel consumption will likely increase.

5) Reduced Power Map

Low Power or 'Valet' option enables already powerful cars to be used by less experienced drivers.

Any of the predefined maps can be used as is or, as an optional extra service, the installer can further refine any map* to suit individual requirements.

No single map is right for every purpose. Vehicle manufacturers are forced to compromise by producing a map that meets emission regulations while providing acceptable economy and performance.

ECU re-map specialists experience similar problems when working with a single map; improvements can be made in some areas but never in all areas.

By offering 5 customised, instantly switchable maps, it is possible to provide an uncompromising solution that can be tailored to suit any purpose and every customer.

Some re-mapping companies offer customers an optional OBD handset that allows switching between 2 maps, but this procedure can take several minutes to perform and carries a risk that a data error could render the vehicle's ECU inoperable.

A specific map can be selected as the default map to revert to at power-up/ignition-on. For example, it may be preferable to always start the vehicle with a standard/100% map or, for added security, a reduced-power or ‘valet mode’ map. Note: One exception to this is Map 5 which, when selected, remains selected, regardless of any default map settings or ignition status, until a different map selection is made.